information needed...Antique Sound USA PA-3 preamp

Original Burnedfingers · 22nd May 2003, 11:45 AM

Gentlemen

I purchased but haven't received as yet a PA-3 preamp. According to what I have been told it has 3 5814A tubes. It is non-working and I would like to find some information before I tear into it to either gut it and start over or to repair it.

Frank

It looks like I may have to draw up yet another schematic. OH GOD!

Any help or information would be much appreciated.

Joe

fdegrove · 22nd May 2003, 11:50 AM

Hi Joe,

IIRC this company is/was based in Arizona but I need to check.

5814s are, ahum...12AU7s.

I'll check later this afternoon...need some coffee first.

Cheers,

fdegrove · 22nd May 2003, 05:58 PM

Hi Joe,

Did a google this afternoon but their website is redirecting to a useless site.

I hope the preamp is hardwired, so much easier to draw the schematic.

Cheers,

Original Burnedfingers · 22nd May 2003, 09:23 PM

Frank

Thanks for trying. I think I will probably scrap the circuit(pc boards) and 12au7's and go for something better. Any ideas on circuit would be appreciated.

Joe

I will draw up the schematic and post it for others to look at before I scrap it.

OH God, another hand drawn schematic

fdegrove · 22nd May 2003, 09:31 PM

Hi Joe,

If you don't need any gain why not try the linestage I posted?

Just let us know your need and maybe we can help you out..?

Cheers and all the best,

Original Burnedfingers · 22nd May 2003, 09:55 PM

Frank

Would your circuit be under "Franks preamp"? If so, I don't have a doubt as to its performance. I may however need some guidance.

Joe

fdegrove · 22nd May 2003, 10:05 PM

Hi,

Yes Joe.

I am here to help all members, so no probs.

Cheers,

Original Burnedfingers · 29th May 2003, 11:48 AM

Are they still in business?

fdegrove · 29th May 2003, 10:14 PM

Hi Joe,

If you mean Antique etc...I wouldn't know.

Have you checked the phone listings?

Cheers,

Original Burnedfingers · 29th May 2003, 11:28 PM

I got my preamp today and half the transformer is trashed. I had to disconnect one side of it to remove the short. The reading I took are as follows: orange pair of wires 51volts ac, blue pair of wires 3.2 volts ac, purple pair of wires 121volts ac. I assume I need a transformer with secondaries of 6.3 volts, 100volts, and 240 volts. If this is correct where do I find one?

Joe

22nd May 2003, 11:45 AM	#1
Original Burnedfingers diyAudio Member Join Date: Nov 2002	information needed...Antique Sound USA PA-3 preamp Gentlemen I purchased but haven't received as yet a PA-3 preamp. According to what I have been told it has 3 5814A tubes. It is non-working and I would like to find some information before I tear into it to either gut it and start over or to repair it. Frank It looks like I may have to draw up yet another schematic. OH GOD! Any help or information would be much appreciated. Joe

22nd May 2003, 11:50 AM	#2
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	NOT SO ANTIQUE... Hi Joe, IIRC this company is/was based in Arizona but I need to check. 5814s are, ahum...12AU7s. I'll check later this afternoon...need some coffee first. Cheers, __________________ Frank

22nd May 2003, 05:58 PM	#3
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	BAD NEWS. Hi Joe, Did a google this afternoon but their website is redirecting to a useless site. I hope the preamp is hardwired, so much easier to draw the schematic. Cheers, __________________ Frank

22nd May 2003, 09:31 PM	#5
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	Hi Joe, If you don't need any gain why not try the linestage I posted? Just let us know your need and maybe we can help you out..? Cheers and all the best, __________________ Frank

22nd May 2003, 10:05 PM	#7
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	Hi, Yes Joe. I am here to help all members, so no probs. Cheers, __________________ Frank

22nd May 2003, 09:23 PM	#4
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Frank Thanks for trying. I think I will probably scrap the circuit(pc boards) and 12au7's and go for something better. Any ideas on circuit would be appreciated. Joe I will draw up the schematic and post it for others to look at before I scrap it. OH God, another hand drawn schematic

22nd May 2003, 09:55 PM	#6
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Frank Would your circuit be under "Franks preamp"? If so, I don't have a doubt as to its performance. I may however need some guidance. Joe

29th May 2003, 11:48 AM	#8
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Are they still in business?

29th May 2003, 10:14 PM	#9
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	Hi Joe, If you mean Antique etc...I wouldn't know. Have you checked the phone listings? Cheers, __________________ Frank

29th May 2003, 11:28 PM	#10
Original Burnedfingers diyAudio Member Join Date: Nov 2002	I got my preamp today and half the transformer is trashed. I had to disconnect one side of it to remove the short. The reading I took are as follows: orange pair of wires 51volts ac, blue pair of wires 3.2 volts ac, purple pair of wires 121volts ac. I assume I need a transformer with secondaries of 6.3 volts, 100volts, and 240 volts. If this is correct where do I find one? Joe

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